JP7254443B2 - Vibration generation system, signal generation device, and vibrating device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vibration generation system, a signal generation device, and a vibration excitation device that are equipped with a vibration exciter that is worn on the human body.

It is difficult to reproduce powerful deep bass with earphones or headphones. A speaker with a large stroke is required to reproduce powerful deep bass, and it is difficult to secure a speaker stroke with a small earphone or headphone such as a canal-type earphone.

In response to this, there has been proposed a sensory vibration headphone equipped with a vibration unit that converts low-frequency signals into mechanical vibrations (see, for example, Patent Document 1). Sensory vibration headphones can reproduce a certain degree of bass and realism. Also, the music signal from the CD device is branched for vibration and for speaker/earphone, the music signal for vibration is input to the vibrator, and the vibration bar is vibrated by resonating with the vibration of the vibrator. Accordingly, an acoustic vibration rod system has been proposed that propagates vibrations from the skin contact portion (see, for example, Patent Document 2).

JP 2016-178627 A JP 2013-48870 A

Just incorporating a vibration exciter into headphones, like the above-mentioned sensory vibration headphones, has limitations in responding to individual tastes, expressing musicality, or achieving a sense of immersion. was insufficient to meet Also, like the acoustic vibration rod system described above, a vibration rod that vibrates by resonating with the vibration of the vibrator has also been insufficient to meet the needs of a wide range of musical experiences.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object thereof is to provide a technique for realizing a more flexible and realistic music experience.

In order to solve the above problems, a vibration generation system according to one aspect of the present invention includes a vibration exciter that is worn on the human body and a variable frequency band that extracts a signal in a set frequency band from an input music signal. a filter unit; a variable amplifier unit that amplifies a signal in a frequency band extracted by the variable filter unit with a set gain; a variable delay unit for delaying by a delay amount of , a driving unit for driving the exciter based on the signal extracted by the variable filter unit and adjusted by the variable amplifier unit and the variable delay unit; and an operation unit that can adjust the frequency band , gain, and delay amount .

Another aspect of the invention is a signal generator. This device comprises a vibrating device equipped with a vibration exciter worn on the human body and a drive unit for driving the vibrator, and a signal generation device connected by wire or wirelessly, a variable filter section for extracting a signal in a set frequency band; a variable amplifier section for amplifying the signal in the frequency band extracted by the variable filter section with a set gain; a variable delay unit for delaying a signal by a set delay amount of the vibration output of the vibration exciter ; and an operation unit capable of adjusting the frequency band , gain and delay amount to be set.

Yet another aspect of the present invention is a vibrating device. This device includes a variable filter section for extracting a signal in a set frequency band from a music signal, a variable amplifier section for amplifying the signal in the frequency band extracted by the variable filter section with a set gain, and the variable A variable delay unit that delays the signal gain-adjusted by the amplification unit by the set delay amount of the vibration output of the vibrator ; A vibrating device connected to a signal generating device by wire or wirelessly, comprising an output unit for outputting a signal, and an operation unit capable of adjusting a frequency band , gain, and delay amount to be set, and is worn on the human body. The vibration exciter used, an input unit for acquiring the signal extracted from the variable filter unit from the signal generation device and adjusted by the variable amplification unit and the variable delay unit , and the input signal and a drive unit for driving the vibrator.

Any combination of the above constituent elements, and conversion of expressions of the present invention between methods, devices, systems, computer programs, etc. are also effective as aspects of the present invention.

According to the present invention, a more flexible and realistic music experience can be realized.

1 is a block diagram showing the configuration of a vibration generation system according to an embodiment of the present invention; FIG. FIG. 4 is a diagram showing a first example of an operation screen displayed on the display; FIG. 10 is a diagram showing a second example of an operation screen displayed on the display; FIG. 10 is a diagram showing a third example of an operation screen displayed on the display unit; 5(a) and 5(b) are diagrams showing a specific example of a mounting method of the vibrating device. FIG. 4 is a diagram showing equal loudness curves; FIG. 10 is a block diagram showing the configuration of a vibration generation system according to Modification 1; FIG. 10 is a block diagram showing the configuration of a vibration generation system according to Modification 2;

FIG. 1 is a block diagram showing the configuration of a vibration generating system 1 according to an embodiment of the invention. The vibration generation system 1 is used in combination with an existing music player 10 and earphones/headphones 40 . A smartphone, a DAP (Digital Audio Player), a CD player, or the like can be used as the music playback device 10 . As the earphone/headphone 40, an overhead headphone, a canal earphone, an inner ear earphone, or the like can be used. Wireless earphones/headphones 40 can also be used.

A vibration generation system 1 includes a signal generation device 20 and a vibration excitation device 30 . The signal generation device 20 includes an input section 21, a preamplifier section 22, an output section 23, a control section 24, a display section 25, an operation section 26, an input side phone jack J1, and an output side phone jack J2. The input section 21 of the signal generation device 20 includes a wired input section 211 and a wireless communication section 212 .

The signal generating device 20 and the music reproducing device 10 are connected by wire or wirelessly. When both are connected by wire, they are connected by a cable with phone plugs attached to both ends. A phone plug at one end of the cable is inserted into the input side phone jack J1 of the signal generator 20 . When both are connected wirelessly, they are connected by short-range wireless communication (in this specification, Bluetooth (registered trademark) is assumed).

In the housing of the signal generator 20, the signal line connected to the input-side phone jack J1 is branched and connected to the output-side phone jack J2 and the wired input section 211, respectively. The wired input section 211 acquires a music signal output from the music reproducing device 10 and outputs it to the preamplifier section 22 . When the sound source signal is stereo, a left channel signal and a right channel signal are acquired from the music reproducing device 10 . An MP3 sound source, a CD sound source, a high-resolution sound source, or the like can be used as the music signal source.

A phone plug of a cable connected to the earphone/headphone 40 can be inserted into the output side phone jack J2 of the signal generation device 20 . In this connection mode, the signal generating device 20 takes in the music signal input from the music reproducing device 10 from the wired input section 211 and passes it through to the earphone/headphone 40 .

A wireless communication unit 212 includes an antenna (not shown) and performs communication processing for short-range wireless communication via the antenna. In FIG. 1, the wireless communication unit 212 is paired with a wireless communication unit (not shown) of the music playback device 10, receives a music signal transmitted from the music playback device 10 by short-range wireless communication, and transmits the signal to the preamplifier unit 22. Output.

When wireless earphones/headphones 40 are used, a wireless communication unit (not shown) of the earphones/headphones 40 and a wireless communication unit (not shown) of the music playback device 10 are paired and connected, and the wireless earphones/headphones 40 are placed at a short distance from the music playback device 10 . A music signal is transmitted to the earphone/headphone 40 by wireless communication. The music signal transmitted to the earphone/headphone 40 and the music signal transmitted to the signal generation device 20 are basically the same.

The example shown in FIG. 1 shows a configuration in which the signal generating device 20 can be connected to the music reproducing device 10 by both wired connection and wireless connection. When adopting a configuration that allows only wired connection, the wireless communication unit 212 is omitted. When adopting a configuration that allows only wireless connection, the wired input unit 211, the input-side phone jack J1, and the output-side phone jack J2 are omitted.

The preamplifier section 22 includes a signal processing section 221 , a variable filter section 222 , a variable amplifier section 223 and a variable delay section 224 . The signal processing section 221 combines the left channel signal and the right channel signal to generate a monaural signal, and outputs the monaural signal to the variable filter section 222 . Alternatively, one of the left channel signal and the right channel signal may be output to the variable filter section 222 . When a monaural signal is input to the preamplifier section 22 , the signal processing section 221 outputs the monaural signal to the variable filter section 222 as it is. Note that when two vibrators 33 are provided for L and R, the left channel signal and right channel signal (stereo signal) are directly output to the variable filter section 222 . For stereo, for example, effects such as a hall feeling in the mid-high range can be expected.

The variable filter section 222 extracts signals in a set frequency band from the input music signal. Variable filter section 222 includes at least one of a low-pass filter, a band-pass filter, and a high-pass filter. A low-pass filter, a band-pass filter, and a high-pass filter may be configured by analog circuits or realized by digital signal processing. The cutoff frequency of the lowpass filter, the upper and lower cutoff frequencies of the bandpass filter, and the cutoff frequency of the highpass filter are variable.

When a low-pass filter, a band-pass filter, and a high-pass filter are configured by analog circuits, the respective cut-off frequencies can be adjusted by making constants of resistance and capacitance variable. When the low-pass filter, band-pass filter, and high-pass filter are composed of digital filters (for example, IIR (Infinite Impulse Response) filter, FIR (Finite Impulse Response) filter), each Cutoff frequency can be adjusted.

The variable amplifier section 223 amplifies the music signal in the frequency band extracted by the variable filter section 222 with a set gain. Thereby, the volume (vibration amount) of the music signal is adjusted.

The variable delay section 224 delays the music signal whose gain has been adjusted by the variable amplification section 223 by a set delay amount. This makes it possible to adjust the time difference between the sound wave transmitted from the earphone/headphone 40 to the ear and the vibration transmitted from the vibrator 33 to the human body (bones). A configuration in which the variable delay unit 224 is omitted is also possible. In that case, the amount of delay is fixed.

The music signal adjusted in at least one of the frequency band, amount, and time by the preamplifier section 22 is output to the output section 23 . The output section 23 includes a wireless communication section 231 . The wireless communication unit 231 has an antenna (not shown) and performs communication processing for short-range wireless communication via the antenna. In FIG. 1, the wireless communication unit 231 is paired with the wireless communication unit 311 of the vibration excitation device 30, and transmits the music signal adjusted by the preamplifier unit 22 and the extracted band information to the wireless communication unit 311 by short-range wireless communication. Send. Note that the signal generation device 20 and the vibrating device 30 may be connected by a wired cable. In that case, a wired output section is provided in place of the wireless communication section 231 in the signal generation device 20 , and a wired input section is provided in place of the wireless communication section 311 in the vibrating device 30 .

The control unit 24 controls the signal generation device 20 as a whole. The control unit 24 is composed of, for example, a microprocessor. The display unit 25 has a display such as a liquid crystal display or an organic EL display, and displays images generated by the control unit 24 . The operation unit 26 includes user interfaces such as switches, buttons, dial knobs, and touch panels, and receives user operations. The display unit 25 and the operation unit 26 may be configured by an integrated touch panel display.

The control unit 24 sets the frequency band to be extracted in the variable filter unit 222, sets the gain in the variable amplification unit 223, and sets the delay amount in the variable delay unit 224 based on the user's operation on the operation unit 26. set.

The vibration excitation device 30 includes an input section 31 , a drive control section 32 and a vibration exciter 33 . Input unit 31 includes wireless communication unit 311 . The drive controller 32 includes an amplifier 321 and an adjuster 322 . Wireless communication unit 311 is paired with wireless communication unit 231 of signal generation device 20 and receives music signals and band information transmitted from signal generation device 20 by short-range wireless communication. Radio communication section 311 outputs the music signal to amplification section 321 and the band information to adjustment section 322 .

The vibration exciter 33 is used by being attached to an arbitrary position of the human body. Any of existing vibrators such as an electrodynamic type, a piezoelectric type, and an electrostatic type may be used as the vibrator 33 . From the viewpoint of minimizing the time difference between the sound wave transmitted from the earphone/headphone 40 to the ear and the vibration transmitted from the vibrator 33 to the human body (bone), a vibrator with a high response speed should be used. is preferred.

The amplifier section 321 converts the music signal input from the input section 31 into a drive signal for the vibration exciter 33 . For example, when an electrodynamic vibrator 33 is used, it converts a music signal into a drive current to flow through a coil. Also, when a piezoelectric vibration exciter 33 is used, it converts a music signal into a voltage to be applied to a piezoelectric element (piezo element).

The adjuster 322 adjusts the resonance frequency of the vibration exciter 33 to the optimum frequency based on the input band information. The adjustment unit 322 brings the resonance frequency of the vibration exciter 33 closer to the center frequency of the band extracted by the preamplifier 22 included in the band information within the range in which the resonance frequency of the vibration exciter 33 can be adjusted. The adjuster 322 can adjust the resonance frequency of the vibrator 33 by changing the physical properties (for example, spring constant) of the vibrator 33 . Among piezoelectric elements, there are those whose resonance frequency can be adjusted by electrical control. In that case, the resonance frequency of the vibrator 33 can be adjusted by adjusting the voltage.

Note that the adjuster 322 is omitted when the vibration exciter 33 whose resonance frequency cannot be adjusted is used. In that case, the resonance frequency of the vibrator 33 is fixed.

The vibrators 33 have significantly different vibration levels that can be felt depending on the part of the human body on which they are worn. This is believed to be the effect of the resonant frequency of bone vibration. According to research by Dr. Alfred Tomatis, the resonant frequency of bone vibration is higher in the skull than in the spine. The resonance frequency of the spine increases as the sacral, lumbar, thoracic, and cervical vertebrae go up. The resonance frequency of the skull is also higher in the parietal bone than in the occipital bone. Therefore, the vibration level that can be felt increases when the user wears the device at a lower position on the spine for lower-frequency vibrations. Therefore, when it is desired to emphasize low frequencies that are difficult to reproduce with the earphones/headphones 40, it is effective to attach the vibration exciter 33 to the waist. However, few general users have knowledge about the resonance frequency of bones, and it is desirable to provide a user interface that guides the user as to the mounting position of the vibration exciter 33 .

FIG. 2 is a diagram showing a first example of the operation screen 25a displayed on the display unit 25. As shown in FIG. The operation screen 25a shown in FIG. 2 shows the correspondence between the frequency band to be emphasized by the vibrator 33 and the part of the human body to which the vibrator 33 is to be attached. In FIG. 2, the frequency bands emphasized by the vibrator 33 are classified into four, and the sound characteristics of each frequency band are expressed in words. In Fig. 2, the frequency band is divided into 4 bands: 4 kHz or higher band (A band), 4 kHz to 1 kHz band (B band), 1 kHz to 375 Hz band (C band), and 375 Hz or lower band (D band). The user can select a band to be emphasized from among the four bands.

In FIG. 2, the characteristics of sound in the A band are expressed as brilliance, luster, and transparency, indicating that the vibrator 33 should be mounted at a position corresponding to the upper part of the skull when the A band is selected. It is The characteristics of sound in the B band are expressed as the thickness and core of the high frequency range, and when the B band is selected, the vibrator 33 should be mounted in a position corresponding to the range from the lower part of the skull to the center of the sternum. is shown. The characteristics of sound in the C band are expressed as a sense of volume, and when the C band is selected, it is indicated that the vibrator 33 should be mounted at a position corresponding to the range from the center of the sternum to the lower end of the hipbone. ing. The characteristics of the sound in the D band are expressed as thickness, volume, and thickness of the bass. It shows what to do.

The user can select the A band by touching the zone Za corresponding to the A band in the operation screen 25a, and can select the B band by touching the zone Zb corresponding to the B band. The C band can be selected by touching the zone Zc corresponding to the C band, and the D band can be selected by touching the zone Zd corresponding to the D band.

In the operation screen 25a, a volume adjustment bar for adjusting the volume of vibration of the vibrator 33 and a delay amount of the vibration output from the vibrator 33 with respect to the sound wave output from the earphone/headphone 40 are provided. A delay adjustment bar is displayed. The user can adjust the volume of vibration of the vibration exciter 33 by adjusting the slide bar S1 on the volume adjustment bar, and can adjust the vibration volume by adjusting the slide bar S2 on the delay adjustment bar. The amount of delay of the vibration output of the device 33 can be adjusted.

FIG. 3 is a diagram showing a second example of the operation screen 25b displayed on the display unit 25. As shown in FIG. In the operation screen 25b shown in FIG. 3, the frequency bands emphasized by the vibrator 33 are classified into four, and the characteristics of the sound of the musical instrument/vocal in each frequency band are expressed in words.

In FIG. 3, as the characteristics of the sounds in the A band, the sounds of the piano are expressed as transparent and brilliant, the sounds of the drums are expressed as broken hats, and the sounds of vocals are expressed as brilliant, glossy and transparent. The characteristics of the B-band sound are the volume and presence of the bass sound, the attack feeling, core, and weight of the keyboard of the piano sound, the snare and tom attack feeling of the drum sound, and the core and outline of the vocal sound. are expressed respectively. The characteristics of the C band sound are the volume and presence of the bass sound, the volume and presence of the piano sound, the snare and tom attack of the drum sound, and the reverberation, depth and warmth of the vocal sound. It is The sound of the D band is characterized by the center of gravity and weight of the bass sound, the power and thickness of the piano sound, the thickness and thickness of the kick drum sound, and the thickness and chest resonance of the vocal sound. there is Other displays are the same as those of the operation screen 25a in FIG.

FIG. 4 is a diagram showing a third example of the operation screen 25c displayed on the display unit 25. As shown in FIG. On the operation screen 25c shown in FIG. 4, frequency bands to be emphasized by the vibration exciter 33 are classified by music genre. In FIG. 4, the frequency bands are classified into two, a band of 1 kHz or more (A band) and a band of less than 1 kHz (B band), and the user can select a band to be emphasized from the two bands.

In FIG. 4, rhythm, attack, pops, and classical music are shown as music genres of the A band. It is indicated that the shaker 33 should be attached. Beat, vocal, rock, and jazz genres are shown as music genres for the B band. should be worn.

The user can select the A band by touching the zone Za corresponding to the A band in the operation screen 25c, and can select the B band by touching the zone Zb corresponding to the B band.

The operation screens 25a to 25c shown in FIGS. 2 to 4 are examples, and other display formats may be used. For example, a format in which the user can specify the upper and lower limits of the frequency band to be emphasized by specific numerical values may be used.

5(a) and 5(b) are diagrams showing a specific example of a mounting method of the vibrating device 30. FIG. FIG. 5A shows an example in which the vibrating device 30 is attached to the inner side of the belt B1 of pants or skirts. The vibrator 30 has a plate-like shape and is mounted so that the vibrating surface of the vibrator 33 comes into contact with the human body. For example, the vibrating device 30 is housed in a simple case and fixed inside the belt B1 with a clip. Alternatively, the back surface of the vibrating device 30 may be fixed to the inner side of the belt B1 using a hook-and-loop fastener (for example, Velcro (registered trademark)). FIG. 5B shows an example in which the vibrating device 30 is mounted inside the seat belt B2. The shape and mounting method of the vibrating device 30 shown in FIGS. 5(a) and 5(b) are examples, and are not limited to FIGS. 5(a) and 5(b).

As described above, according to the present embodiment, by attaching the vibration exciter 33 to a portion other than the portion where the earphone/headphone 40 is attached, a sense of realism and immersion that cannot be obtained only with the earphone/headphone 40 can be obtained. Obtainable. That is, by driving the vibrator 33 with the music signal output from the preamplifier unit 22 and transmitting the vibration to the body, it is possible to realize a powerful music experience accompanied by a synergistic effect with the sound of the earphone/headphone 40. can.

Since the resonance of the body (bone) is used, the precision of the resonance frequency of the vibration exciter 33 is not required, and a low-pitched sound and presence can be obtained not only from the ears but also from the whole body. In the existing vibrator with built-in headphones, the resonance frequency and mounting position of the vibrator were fixed, so the vibrations close to the resonance frequency of the vibrator always increased, and it was possible to obtain vibrations only in the band that one wanted to experience. was difficult.

On the other hand, in the vibration generating system 1 according to the present embodiment, the frequency band can be limited by the built-in variable filter section 222, and unnecessary music signals (vibrations) can be suppressed. . Furthermore, in the vibration generating system 1 according to the present embodiment, the vibration exciter 33 can be attached to any part of the body. can be made

In addition, the band and amount of the music signal to be converted into vibration can be individually adjusted, and the time difference from the sound wave output from the earphone/headphone 40 can also be adjusted. Therefore, it is possible to flexibly adjust according to individual tastes, and the immersive feeling can be further enhanced.

In addition, since it can be used in combination with the existing music reproducing apparatus 10 and the earphone/headphone 40, the user can introduce the vibration generating system 1 at a low cost, and existing resources can be effectively utilized. Further, by visually displaying the correspondence between the emphasized frequency band and the part of the human body to which the vibrator 33 is to be attached, the user can easily master the vibration generation system 1 according to the present embodiment. can be done.

Further, the vibration generating system 1 according to this embodiment is also effective in preventing hearing loss.
FIG. 6 is a diagram showing equal loudness curves. The equal loudness curve shown in FIG. 6 is an equal loudness curve standardized by ISO226:2003. An equal loudness level curve is a frequency characteristic curve that is created by connecting sound pressure levels at which the sound is perceived as equal in volume by human hearing when the frequency of the sound is changed.

U.S. Occupational Safety and Health Administration (OSHA) guidelines report that prolonged exposure to extremely loud sounds can damage your ears, leading to chronic noise-induced hearing loss (NIHL). According to the above guidelines, the duration of continuous listening without impairing hearing at each sound pressure level is defined as follows.
90 dB SPL 8 hours 95 dB SPL 4 hours 100 dB SPL 2 hours 105 dB SPL 1 hour 110 dB SPL 30 minutes 115 dB SPL 15 minutes 120 dB SPL Avoidance required

Generally, human hearing is most sensitive in the range of 2 kHz to 4 kHz, so many users try to adjust the volume of headphones or the like based on the sound in the band of 2 kHz to 4 kHz. In FIG. 6, the sound pressure level at 2 kHz-4 kHz for the equal loudness curve of 80 phon is about 78 dB, and the sound pressure level at 125 Hz for the equal loudness curve at 80 phon is about 90 dB. The difference is approximately 12 dB. If the volume is adjusted to the band of 2 kHz to 4 kHz based on the equal loudness curve of 80 phon, the sound pressure exceeding 90 dB will be exposed to the sense of hearing at 125 kHz or lower. In this case, the risk of causing hearing impairment increases. As shown in the above guideline, exposure to sound pressure of 90 dB or more (see area A1 in FIG. 6) for a long time may cause hearing impairment.

On the other hand, by switching (compensating for) the sound of the area A1 to the vibration by the vibrator 33, the reference line of the equal loudness curve can be lowered from 80 phon. As a result, it can be expected that the user will lower the overall sound volume of headphones or the like, and the possibility that the user's hearing will be exposed to sound pressure exceeding 90 dB can be reduced.

The present invention has been described above based on the embodiments. It should be understood by those skilled in the art that this embodiment is merely an example, and that various modifications can be made to combinations of each component and each treatment process, and that such modifications are within the scope of the present invention. be.

FIG. 7 is a block diagram showing the configuration of the vibration generation system 1 according to Modification 1. As shown in FIG. In Modified Example 1, the function of the signal generation device 20 of the vibration generation system 1 shown in FIG. For example, if the music playback device 10 is a smart phone, it can be configured by installing an application program for realizing the functions of the preamplifier section 22 by digital signal processing. Also, the music reproducing device 10 may be configured with a dedicated DAP that incorporates the function of the preamplifier section 22 from the beginning. In Modified Example 1, music data is directly supplied from the music data holding section 11 to the preamplifier section 22 in the music reproducing device 10, so communication between the music reproducing device 10 and the signal generating device 20 is not necessary.

FIG. 8 is a block diagram showing the configuration of the vibration generation system 1 according to Modification 2. As shown in FIG. Modification 2 is an example using a plurality of vibrating devices 30a and 30b. A plurality of preamplifier sections 22a, 22b and output sections 23a, 23b corresponding to the plurality of vibrating devices 30a, 30b are provided in the signal generation device 20 . It is difficult to cover wide-band vibration with one vibrator 33 . Therefore, for example, by providing a vibrating device 30a for low frequencies and a vibrating device 30b for high frequencies, it is possible to generate vibrations in a wider range. When a plurality of vibrating devices 30a and 30b are provided, they are attached to different parts of the human body according to the respective extracted frequency bands. Further, the plurality of vibrating devices 30a and 30b may be a vibrating device 30a that vibrates based on the left channel signal and a vibrating device 30b that vibrates based on the right channel signal.

In the above-described embodiment, an example in which the user manually sets the frequency band, amount, and time adjusted by the preamplifier section 22 has been described. In this regard, when the music reproducing device 10 or the signal generating device 20 is connected to the Internet, attribute information such as the genre of music data can be acquired and the control unit can automatically set the attribute information. In addition, the AI engine (frequency determination unit) inside or outside the device analyzes multiple music signals, and based on the analysis results and the target music signal, at least one of the frequency band, amount, and time is automatically selected. You can adjust.

Reference Signs List 1 vibration generation system 10 music player 11 music data storage unit 20 signal generation device 21 input unit 211 wired input unit 212 wireless communication unit 22 preamplifier unit 221 signal processing unit 222 variable filter unit 223 variable amplifier unit 224 variable delay unit 23 output unit 231 wireless communication unit 24 control unit 25 display unit 26 operation unit 30 vibrating device 31 input unit 311 wireless communication unit 32 drive control unit 321 Amplifying section 322 Adjusting section 33 Vibrator 40 Earphone/headphone J1 Input side phone jack J2 Output side phone jack.

Claims (6)

a vibration exciter that is worn and used on the human body;
a variable filter section for extracting a signal in a set frequency band from an input music signal;
a variable amplification unit that amplifies the frequency band signal extracted by the variable filter unit with a set gain;
a variable delay unit that adjusts the signal whose gain has been adjusted by the variable amplifier unit so as to reduce the time difference between the sound wave that is transmitted from the earphone or headphone to the ear and the vibration that is transmitted from the vibrator to the human body;
a drive unit that drives the vibrator based on the signal extracted by the variable filter unit and adjusted by the variable amplifier unit and the variable delay unit;
an operation unit capable of adjusting the frequency band, gain and time difference to be set;
A vibration generation system comprising: a display unit for displaying a screen showing the correspondence relationship between the set frequency band and the part of the human body to which the vibrator is to be attached;
3. The vibration generating system of claim 1, further comprising: 3. The vibration generation system according to claim 1, wherein the set frequency bands are classified based on music genres. 3. The vibration generation system according to claim 1, wherein the frequency bands to be set are classified based on the sound characteristics of musical instruments and/or vocals. A plurality of sets of the vibrator and the variable filter unit are provided,
5. The vibration generation system according to any one of claims 1 to 4, wherein each of the plurality of vibrators can be attached to different parts of the human body. A vibrating device including a vibration exciter worn on the human body and a driving unit for driving the vibrator, and a signal generation device connected by wire or wirelessly,
a variable filter section for extracting a signal in a set frequency band from a music signal;
a variable amplification unit that amplifies the frequency band signal extracted by the variable filter unit with a set gain;
a variable delay unit that adjusts the signal whose gain has been adjusted by the variable amplifier unit so as to reduce the time difference between the sound wave that is transmitted from the earphone or headphone to the ear and the vibration that is transmitted from the vibrator to the human body;
an output unit that outputs the signal extracted by the variable filter unit and adjusted by the variable amplification unit and the variable delay unit to the vibration excitation device;
an operation unit capable of adjusting the frequency band, gain and time difference to be set;
A signal generation device comprising:

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